ofdm

说明：  巴特沃斯滤波器C语言实现,低通滤波器,IIR(Butterworth filter C language implementation, low pass filter, IIR)

ijetty服务器的启动关闭以及资源下载，基本框架，直接import进eclipse就可运行(ijetty server startup shutdown, and resources, the basic framework for direct import into eclipse can be run)

区别去传统的傅里叶变换，对于非平稳信号而言，分数傅里叶变换是一个较好的方法，本程序实现了分数傅里叶变化对LPF类信号的估计。具有较高的学习价值(Different from the traditional Fourier transform, for non-stationary signals, fractional Fourier transform is a better method, this program implements the fractional Fourier transform to estimate the class LPF signal. It has higher learning value)

matlab计算数据的AMR、ATR、RMS等特征值(calculate AMR and ATR of the data)

说明：  ofdm的编码过程，用evm和比特率进行对比(The encoding process of OFDM is compared with EVM and bit rate)

标准MODBUS规约文档。Modbus 协议是应用于电子控制器上的一种通用语言。通过此协议，控制器相互之间、控制器经由网络（例如以太网）和其它设备之间可以通信。它已经成为一通用工业标准。(Standard MODBUS Statute of the document. Modbus protocol is applied to an electronic controller on the lingua franca. With this agreement, the controller between the controller via the network (such as Ethernet) and other devices can communicate. It has become a common industry standard.)

《蓝牙4.0实战演练》，C2540蓝牙芯片免费高清教程书籍(Bluetooth 4.0 practical exercise, C2540 Bluetooth chip free HD tutorial books)

说明：  线性相位 FIR 低通、高通、带通和带阻滤波器的设计方法，频率采样设计法的基本概念和线性相位的实现方法。几种线性相位的特点，熟悉和掌握矩形窗、三角形窗、汉宁窗、海明窗、布莱克曼窗、凯塞窗设计 IIR 数字滤波器的方法，频率抽样设计法的线性相位的设计方法，并对各种线性相位的频率抽样法的设计给出调整和改进。 利用 MATLAB 进行各类 FIR 数字滤波器的设计方法。(The design method of linear phase FIR low pass, high pass, band pass and band stop filter, the basic concept of frequency sampling design method and the realization method of linear phase. Familiar with and master the design methods of IIR digital filter of rectangle window, triangle window, Hanning window, Heming window, Blackman window and Kaiser window, and the design methods of linear phase of frequency sampling design method, and adjust and improve the design of frequency sampling method of various linear phases. Matlab is used to design all kinds of FIR digital filters.)

说明：  利用pluto设备实现qpsk调制与解调，simulink代码文件。(Use pluto equipment to realize qpsk modulation and demodulation, simulink code file.)

说明：  D2D信道分配仿真，算法有启发式算法，最优算法等，仿真介入D2D对随干扰门限的变化等。(D2D channel allocation simulation, algorithm has heuristic algorithm, optimal algorithm and so on, simulation involves the change of D2D pair with interference threshold and so on.)